Your most satisfying fix on mining equipment?

[rockrambler]

There was this one time I spent ages tracking down a power problem on an old underground loader, only to discover it was a single corroded connector hiding beneath a heap of dirt. Once I cleaned it up and tightened everything, the machine sprang back to life as if it was recalling its purpose.

What's the repair in mining that made you feel like a hero?

 

[hazguard]

Changed out a dead hydraulic hose in the middle of my shift, got the loader working again and felt like a hero.